_content/solutions: remove twitter

Change-Id: I75fa8a77bbf894691337a00df97a78c36a6a6964
Reviewed-on: https://go-review.googlesource.com/c/website/+/852245
Reviewed-by: Michael Matloob <matloob@google.com>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
diff --git a/_content/images/logos/x.png b/_content/images/logos/x.png
deleted file mode 100644
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--- a/_content/images/logos/x.png
+++ /dev/null
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diff --git a/_content/solutions/x.md b/_content/solutions/x.md
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--- a/_content/solutions/x.md
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----
-title: "X - 5 billion sessions a day in realtime"
-description: "We now see about five billion sessions per day, and growing. Hundreds of millions of devices send millions of events every second to the Answers endpoint. During the time that it took you to read to here, the Answers back-end will have received and processed about 10,000,000 analytics events."
-company: X
-logoSrc: x.png
-logoSrcDark: x.png
-series: Case Studies
-link: https://blog.x.com/engineering/en_us/a/2015/handling-five-billion-sessions-a-day-in-real-time.html
-inLandingPageGrid: true
----